31204066542 has 64 divisors (see below), whose sum is σ = 72119165184. Its totient is φ = 8895511040.

The previous prime is 31204066541. The next prime is 31204066573. The reversal of 31204066542 is 24566040213.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204066541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3178213 + ... + 3188015.

It is an arithmetic number, because the mean of its divisors is an integer number (1126861956).

Almost surely, 2^31204066542 is an apocalyptic number.

31204066542 is an abundant number, since it is smaller than the sum of its proper divisors (40915098642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31204066542 is a wasteful number, since it uses less digits than its factorization.

31204066542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12673.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 31204066542 in words is "thirty-one billion, two hundred four million, sixty-six thousand, five hundred forty-two".